Her +1 ability reads Each player discards a card. Since it doesnt say anything about targeting or choosing a specific player, a player with hexproof would still have to discard a card
Viable game plan against some aggro lists
But once you exile the first copy of a creature with an activated ability, you can pass on all of the activated abilities of all creatures exiled by the Cauldron to any other creature you have
However, as the celebration goes on, a new mystery begins as parts of the Great Illuminary come crashing down upon the crowd
They will remain in play until banished, although they may require additional Ink cost whenever a player uses the ability unless it is a passive benefit
Final Fantasy Through The Ages Sheet WeeklyMTG Reveals With week 2 of Final Fantasy previews well underway, Tuesday, May 20th's WeeklyMTG Twitch stream got in on the action